//
//  OffscreenUi.h
//  interface/src/entities
//
//  Created by Bradley Austin Davis on 2015-04-04
//  Copyright 2015 High Fidelity, Inc.
//
//  Distributed under the Apache License, Version 2.0.
//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//
#pragma once
#ifndef hifi_OffscreenUi_h
#define hifi_OffscreenUi_h

#include "OffscreenQmlSurface.h"

#include <DependencyManager.h>


#define HIFI_QML_DECL \
private: \
    static const QString NAME; \
    static const QUrl QML; \
public: \
    static void registerType(); \
    static void show(std::function<void(QQmlContext*, QObject*)> f = [](QQmlContext*, QObject*) {}); \
    static void toggle(std::function<void(QQmlContext*, QObject*)> f = [](QQmlContext*, QObject*) {}); \
    static void load(std::function<void(QQmlContext*, QObject*)> f = [](QQmlContext*, QObject*) {}); \
private:

#define HIFI_QML_DECL_LAMBDA \
protected: \
    static const QString NAME; \
    static const QUrl QML; \
public: \
    static void registerType(); \
    static void show(); \
    static void toggle(); \
    static void load(); \
private:

#define HIFI_QML_DEF(x) \
    const QUrl x::QML = QUrl(#x ".qml"); \
    const QString x::NAME = #x; \
    \
    void x::registerType() { \
        qmlRegisterType<x>("Hifi", 1, 0, NAME.toLocal8Bit().constData()); \
    } \
    \
    void x::show(std::function<void(QQmlContext*, QObject*)> f) { \
        auto offscreenUi = DependencyManager::get<OffscreenUi>(); \
        offscreenUi->show(QML, NAME, f); \
    } \
    \
    void x::toggle(std::function<void(QQmlContext*, QObject*)> f) { \
        auto offscreenUi = DependencyManager::get<OffscreenUi>(); \
        offscreenUi->toggle(QML, NAME, f); \
    } \
    void x::load(std::function<void(QQmlContext*, QObject*)> f) { \
        auto offscreenUi = DependencyManager::get<OffscreenUi>(); \
        offscreenUi->load(QML, f); \
    } 

#define HIFI_QML_DEF_LAMBDA(x, f) \
    const QUrl x::QML = QUrl(#x ".qml"); \
    const QString x::NAME = #x; \
    \
    void x::registerType() { \
        qmlRegisterType<x>("Hifi", 1, 0, NAME.toLocal8Bit().constData()); \
    } \
    void x::show() { \
        auto offscreenUi = DependencyManager::get<OffscreenUi>(); \
        offscreenUi->show(QML, NAME, f); \
    } \
    void x::toggle() { \
        auto offscreenUi = DependencyManager::get<OffscreenUi>(); \
        offscreenUi->toggle(QML, NAME, f); \
    } \
    void x::load() { \
        auto offscreenUi = DependencyManager::get<OffscreenUi>(); \
        offscreenUi->load(QML, f); \
    } 

class OffscreenUi : public OffscreenQmlSurface, public Dependency {
    Q_OBJECT

public:
    OffscreenUi();
    virtual ~OffscreenUi();
    void show(const QUrl& url, const QString& name, std::function<void(QQmlContext*, QObject*)> f = [](QQmlContext*, QObject*) {});
    void toggle(const QUrl& url, const QString& name, std::function<void(QQmlContext*, QObject*)> f = [](QQmlContext*, QObject*) {});
    bool shouldSwallowShortcut(QEvent* event);

    // Messagebox replacement functions
    using ButtonCallback = std::function<void(QMessageBox::StandardButton)>;
    static ButtonCallback NO_OP_CALLBACK;

    static void messageBox(const QString& title, const QString& text,
        ButtonCallback f,
        QMessageBox::Icon icon, 
        QMessageBox::StandardButtons buttons);

    static void information(const QString& title, const QString& text,
        ButtonCallback callback = NO_OP_CALLBACK,
        QMessageBox::StandardButtons buttons = QMessageBox::Ok);

    static void question(const QString& title, const QString& text,
        ButtonCallback callback = NO_OP_CALLBACK,
        QMessageBox::StandardButtons buttons = QMessageBox::StandardButtons(QMessageBox::Yes | QMessageBox::No));

    static void warning(const QString& title, const QString& text,
        ButtonCallback callback = NO_OP_CALLBACK,
        QMessageBox::StandardButtons buttons = QMessageBox::Ok);

    static void critical(const QString& title, const QString& text,
        ButtonCallback callback = NO_OP_CALLBACK,
        QMessageBox::StandardButtons buttons = QMessageBox::Ok);

    static void error(const QString& text);  // Interim dialog in new style
};

#endif